21029008

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1$

素因数の和:153

約数の個数: 120

約数和(自身を含む): 55550016

約数和(自身を除く): 34521008

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 101, 104, 112, 143, 154, 169, 176, 182, 202, 208, 286, 308, 338, 364, 404, 572, 616, 676, 707, 728, 808, 1001, 1111, 1144, 1183, 1232, 1313, 1352, 1414, 1456, 1616, 1859, 2002, 2222, 2288, 2366, 2626, 2704, 2828, 3718, 4004, 4444, 4732, 5252, 5656, 7436, 7777, 8008, 8888, 9191, 9464, 10504, 11312, 13013, 14443, 14872, 15554, 16016, 17069, 17776, 18382, 18928, 21008, 26026, 28886, 29744, 31108, 34138, 36764, 52052, 57772, 62216, 68276, 73528, 101101, 104104, 115544, 119483, 124432, 136552, 147056, 187759, 202202, 208208, 231088, 238966, 273104, 375518, 404404, 477932, 751036, 808808, 955864, 1314313, 1502072, 1617616, 1911728, 2628626, 3004144, 5257252, 10514504, 21029008]

約数ペア:

[(1, 21029008), (2, 10514504), (4, 5257252), (7, 3004144), (8, 2628626), (11, 1911728), (13, 1617616), (14, 1502072), (16, 1314313), (22, 955864), (26, 808808), (28, 751036), (44, 477932), (52, 404404), (56, 375518), (77, 273104), (88, 238966), (91, 231088), (101, 208208), (104, 202202), (112, 187759), (143, 147056), (154, 136552), (169, 124432), (176, 119483), (182, 115544), (202, 104104), (208, 101101), (286, 73528), (308, 68276), (338, 62216), (364, 57772), (404, 52052), (572, 36764), (616, 34138), (676, 31108), (707, 29744), (728, 28886), (808, 26026), (1001, 21008), (1111, 18928), (1144, 18382), (1183, 17776), (1232, 17069), (1313, 16016), (1352, 15554), (1414, 14872), (1456, 14443), (1616, 13013), (1859, 11312), (2002, 10504), (2222, 9464), (2288, 9191), (2366, 8888), (2626, 8008), (2704, 7777), (2828, 7436), (3718, 5656), (4004, 5252), (4444, 4732)]